Connecter for electrical conduits



July 15, 1930. GANGLE 1,770,883

CONVEYER FOR ELECTRICAL CONDUITS Filed April 14, 1928 Fi Tr, J g 211K.16 17-W 7 a 2 1a 1a 15 16 n- INVENTOR 0.1M k. Qt; g NHL? (has.

' 30 cable.

7 Patented July lS, 1930 f ween UNTEDT A PA E TTQFLFICE 3 if ALBERT J.GANGLE, orsannn, rEN NsYLvAnrA, assienoe nv" ivrnsnnnssr'emvrnnrsl 'roNATIONAL ELECTRIC rnonuo'rs CORPORATION, a conronn'rrou or DELAWAREooivnncrime For. n'mic'rnroanconnnrrs 4 A pplication filed April14,1923"a ratin .teaser. I

It is the object of the invention to provide an improved connecter forsecuring electrical conduits and cables-to outlet boxes and otherfittings, the distinguishing feature of which is the novel means wherebythe connector is caused to graspand hold the conduit'or cable in a firmmechanical andelectrical union. r V r In the accompanying drawingsFigure l is a sectional elevation showing a rigid conduit secured to anoutlet box by a connecterembodying the invention. Figure 2 is a rearelevation, viewed from the right hand side of Figure 1.- Figure 3 is aside elevation of tudinal section of the gripping member, and t Figure 8is an end View thereof.

The numeral 1 designates a portlon of the an opening for the ends ofelectrical conductors in the conduit 2, which'is shown as a rigidmetallic conduit, but which may be a flexible metallic conduit or anarmored neck portion 3 which enters the opening in the outlet box andterminates at the shoulder 5, and the outer barrel portion 4 extendingrear'wardly from the shoulder 5 which latter bears against the outerface of the wall of the box. Anysuitable means may be used forsecuringthe connecterito the box. As shown in the drawings, theportion?) of the connecter is threaded and is provided with a nut 6,which binds the shoulder 5 of the connecter against the outer face ofthe box wall 7 g are integral with the body 4,thus forming alongitudinal slot under the boss 9 The upper face of the boss 9slopesdownwardly V and backwardly in an incline l1 terminating the integralbody portion of the connecter,"

v'orde'r; to radiate? the} seating wall of an outlet box or otherfitting having The connecter comprises the inner H g 7 boss 9, theforward at the outer end of the connector, and form- -ing at such outerend a second rearwardly 7 open transverse slot 12.

wmu inclined portion H bored the forwardly inclined threaded open.- fTing 1'3, through which,works thefibinding screw '14.

The gripping member l5is a plate having the oppositeforward ears 16, 16, and the rear ears 17,117, restin'gin' theslots 8 and 12 respectively,and thus supporting it loosely in the longitudinal slot in the topQfthebar- -rel4 andunderneath the boss 9.. The lower face of grippingmember 15 is provided with teeth 18', which are preferably: pitchedforjw'ardly assh'own in'Figure 7, and are'pref- .erably arranged in rowsalongthe opposite longitudinal edges of the body of the said member, asshown in Figures'5, 6, and 8. 'In thee p- I0 ping'member' '15'initsplace,lit maybe initial-' ly'formed Withit-s' forward ears 1 6,l6'turne'd upwardly shownfin Figure 6,and when it v I s has been broughtinto position, lthessears fare"turnedfdownwardlv into the plane of thebody of the member, as shown in Figures 5and8a g. f

" By reason ofthe loosesup'port of the grip-' member 15 in the ,slotformedin the "ba'rrelf l of the c onnecter underneath the enjd of theconduit 2 may beslipped into the'barrel'el' into contact with the'internal shoulder 7; Then by driving 1 down the screw: 14 the grippingmember is caused to bindthe conduit tightly in place in the connecter.By reason of the forwardinclination ofth'e screw 14; it has awedgingaction upon the 1nember-15,"forcing the latter both downwardly andslightly forwardly as well, thus wedg'ing the end of the con duittightly against the shoulder 7, and this forward wedging etfect'isaugmented by the forward pitch of the teeth '18 on the under surface ofthe gripping member. These" teeth 18 are caused to biteinto thesurface'ofthe conduit, and make an exceptionally good ;vention'isnotlimited to the-specific form of Through the back? 111 "of the boss is radaptedto receive a conduit, an open ng gripping member herein shown,nor to the specific means shown for causing it to bind upon the conduit,and that other structural variations may be made without departure fromthe invention.

I claim as my invention:

1. A .connecter for electrical conduits comprising a forward portionwith means for securing itto an outlet box and a rear portipn adap ed tr c ive a conduit, an open-' ing through the wall of said outer portionand an arch extending transversely over said opening, a gripping memberin said opening provided with teeth on its inner surface, and aforwardly inclined screw Working in a threaded opening through said archand adapted to press said binding member in-,

V vvardly' and forwardly.

' 2. A connecter for elect 'ical conduits compris ng, n comb nation, abarrel portion v r 1 1' wa Y it a rr 'or-ion an" h ou i t1 e 11 of sa lb el t d an arch extending transversely over 881d opening,[a grippingmember loosely supported in" said opening and having on its nner surfaceplural ty of teeth, and means carr ed by said arch for ljorclng saidgripping member inwardly and forwardly in contact with the surface ofthe conduit.

A connecter for electrical conduits comprising, in combination, a barrelportion adapted to receive a conduit, an opening through the Wall'ofsaid bar-relportion and an arch extending transversely over saidopening,-'a gripping member loosely sup ported in "said opening andhaving on its inner surface'a row of teeth-along each of itslongitudinal edges, and a forwardly inclined screw in vSaid arc-hadaptedto force said gripping member inwardly and; forwardly in contactwith the surace of the conduit. i

4, A-connecter for electrical conduits com- ]risin in combination abarrel ortion 1 b7 i 7 adapted to receive acondui't, an opening throughthe wall of said barrel port on and an arch extending transversely oversaid opening, a gripping member loosely sup ported in said opening andhaving on its inner surface a pluralityof forwardly p'itchel teeth, anda forwardly inclined screw- Sin-said arch adapted to. force saidgripping; member inwardly and forwardly iii contact with the surface ofthe conduit, In testimony whereof, I have hereunto set my hand.

ALBERT J-. GANGLE.

